Fluid handling – Line condition change responsive valves – Direct response valves
Patent
1984-05-22
1986-04-08
Nilson, Robert G.
Fluid handling
Line condition change responsive valves
Direct response valves
F16K 1514
Patent
active
045806047
ABSTRACT:
A discharging valve device for a compressor discharges gas compressed in a compression chamber outside said chamber against an urging force of a discharging valve to a valve seat and resistance of breaking a film of a lubricating oil deposited at and near a cacting area formed between the valve seat and the discharging valve. The discharging valve device comprises a discharging port communicated with a compression chamber, a valve seat formed at the peripheral portion of said discharging port and having a curvature in cross section, and a discharging valve which is forcibly in contact with a part of said valve seat so as to open and close said discharging port depending on pressure in said compression chamber, wherein a contacting width of the sealing part formed by the contact through an oil film between said discharging valve and said valve seat is smaller than a contacting width of an oil film formed in case of combination of a flat discharging valve with a valve seat having a uniform curvature in cross section.
REFERENCES:
patent: 73038 (1868-01-01), Pollard
patent: 338609 (1886-03-01), Nysewander
patent: 3606588 (1969-04-01), Romerhaus
Proceedings of the 1982 Purdue Compressor Technology Conference (Jul. 21-23, 1982), pp. 149-158.
Hirahara Takuho
Ishijima Koji
Iwabuchi Osamu
Kawaguchi Susumu
Nakane Kazuhiro
Mitsubishi Denki & Kabushiki Kaisha
Nilson Robert G.
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